問題詳情
18. 已知圓 O圓 O2外切於 C，其公切線 L 分別切兩圓於 A、B，過 C 點的切線 M交 L 於 D 點。已知圓 O1的半徑為10 公分，圓 O2的半徑為 6 公分，則 
的長度為多少公分？
(A) 2
(B) 4
(C) 2
(D) 4
的長度為多少公分？(A) 2
(B) 4
(C) 2
(D) 4
參考答案
答案：A
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- 【題組】I have two t ts to Mayday concert. Would you come with me?
- 關於尺度線與尺度界線之敘述，下列哪些正確？(A)繪製尺度線時，必要時輪廓線、中心線可作為尺度線之使用(B)尺度標註時，尺度線與尺度界線皆為細實線且通常兩線相互垂直(C)當以中心線做為尺度界線時，
- 【題組】(A) came true (B) to come true (C) coming true (D) come true
- 【題組】Many girls have a_____ted the idea of wearing miniskirts.
- 下列詩詞所配對季節，何者有誤？(A)金風玉露一相逢，便勝人間無數。--秋天 (B) 四面荷花三面柳、三更畫舫穿藕花。--夏天 (C) 沾衣欲溼杏花雨，吹面不寒楊柳風。--春天 (D) 枯藤、老樹
- 【題組】What is “juicer”?(A) It’s a machine to make juice.(B) It’s a machine to make bread.(C) It’s
- Kevin got up at a quarter past nine. He had to take an airplane at ten to ten. When he reached th
- 關於公務員可以終止其與國家之公法上職務關係的事由不包含下列何者？(A)經懲戒予以免職 (B)任期屆滿卸職(C)死亡(D)依法解聘或聘期屆滿
- 福壽全歸所指為何？(A)男壽 (B)女壽 (C)女喪 (D)男喪
- 【 】Taking photos may be a piece of cake, but making a living by selling them is ______ more diffi
內容推薦
- 「落托劉郎作帝歸，樽前感慨大風詩。淮陰反接英彭族，更欲多求猛士為。」（張方平〈過 沛題歌風臺〉）詩中「淮陰反接英彭族，更欲多求猛士為」有何意涵？ (A)意謂劉邦底定江山 (B)意謂劉邦人才濟濟 (
- Hey, guys. Make _______ at home. Enjoy some snacks. My parents made them _______.(A)yourselves; b
- 【題組】(A) learn (B) bring (C) cut (D) dance
- （ ）The phone rang ________ Ken’s son was studying in the room.(A) who (B) while (C) where (D) wh
- 【題組】5 The Wind Lion God can _____.(A)make you rich (B) keep you safe(C) make you happy (D) make you
- 【題組】Don’t make friends with the man.Julia is talking to the man. ( 用關係代名詞合併為一句 )
- A: Did you agree on what Helen said in the video meeting?B: ________________ I liked her ideas.(A
- 【題組】網路在現代社會中扮演重要的角色。
- 【 】Last Sunday, Jerry got a traffic ______ because of speeding. He needs to pay $6,000 for the fi
- Jessie is afraid of vampires and mummies(木乃伊). She doesn’t like ______ movies or ghost stories.(A
- 下列各組成語，意思相近的是： (A)集腋成裘／杯水車薪 (B)舊調重彈／改弦易轍 (C)呶呶不休／瞠目結舌 (D)頭童齒豁／老態龍鍾
- 【題組】This winter vacation, I am going to visit Korea.Korea is famous for its spicy food. ( 用關係代名詞合
- 下列何者屬於全面品質管理的順序性思考模式？ (A)投入→過程→產出→投入 (B)投入→過程→產出→品質 (C)投入→過程→產出→品質→投入(D)投入→產出→品質→投入→過程
- ( ) The National Palace Museum is one of the most popular places ______ Andy has ever visited.(A)
- 【題組】(A) when (B) and (C) but (D) so
- 下列詩句中，何者具有因果關係？ (A)草枯鷹眼疾 (B)清泉石上流 (C)野徑雲俱黑 (D)魂返關塞黑
- Joe got up ____ this morning, so he ran to school ______.(A) late; quickly (B) late; quick (C) l
- 四、 閱讀測驗（每題二分，共 10 分）【題組】Jerry has one hundred dollars. He has a cheese cake.What else can’t he b
- 【題組】Without water and food, the little boy survived(幸存). We were all surprised ____ the news.
- 【題組】＿＿＿＿＿Look at the s n. It says “ Don’t touch anything.”
- ( )I suggest that you ______ go to work on time, or you may lose your job.(A)will(B)should(C)can(
- 四、骨缺損範圍相當大時，可採用會降解（degradation）的天然或人工合成高分子材料製成之組織工程鷹架（tissue engineering scaffold）填補物，填補物逐漸降解的遺留空間由組
- ( )______ so much work to do every day really ______ me crazy.(A)Have; drive(B)Having; drive(C)Ha
- 交流電路的戴維寧等效電路如【圖 34】所示，若等效阻抗，調整負載阻抗，使得負載獲得最大功率消耗，則下列哪些正確？ (A)負載阻抗 = 5+ j4Ω (B)負載電流的絕對值 =10 A(C)負載
- 【題組】編列預算能幫助你停止浪費金錢。